PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-16:27:30
G02     359.8          75.0                9.0 +/-    0.65       9.3 +/-    0.65  0.060 / 0.080
G05     165.7          36.8               11.9 +/-    1.01      18.3 +/-    1.01  0.060 / 0.080
G06     43.3           35.9                9.7 +/-    1.80      15.1 +/-    1.80  0.220 / 0.280
G12     296.5          76.2                8.4 +/-    0.79       8.6 +/-    0.79  0.180 / 0.330
G19     81.9           22.0                9.6 +/-    1.10      20.1 +/-    1.10  0.020 / 0.020
G24     225.3          19.0               11.5 +/-    2.57      25.8 +/-    2.57  0.030 / 0.020
G25     315.3          37.4               10.0 +/-    0.76      15.2 +/-    0.76  0.040 / 0.060
G29     292.4          15.7                8.6 +/-    1.89      20.9 +/-    1.89  0.050 / 0.060